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Calcimator

Peak Demand Forecasting Calculator

Forecast future peak demand with growth, EV load, and efficiency gains.

Inputs

MW
%
years
%
%/yr
%/yr

Results

Forecast Peak

5,918 MW

Required Capacity

6,806 MW

Peak Growth918 MW
Total Growth18.4%
Net Growth Rate1.7%/yr
How to Use This Calculator
  1. Enter Current Peak Demand, Base Growth Rate, and Forecast Period.
  2. Set Reserve Margin, EV Load Growth, and Efficiency Reduction.
  3. Review Forecast Peak (MW) and Required Capacity (MW).
  4. Use Peak Growth (MW) and Total Growth (%) to inform your decision.

How the result changes with Current Peak Demand

Current Peak DemandForecast PeakRequired Capacity
50,00959,191 MW68,070 MW
175,007207,140 MW238,212 MW
325,004384,679 MW442,381 MW
450,001532,627 MW612,521 MW

What each input means

Current Peak Demand
Current system peak demand.
Base Growth Rate
Annual base load growth rate.
Forecast Period
Number of years to forecast.
Reserve Margin
Required capacity reserve margin above peak.
EV Load Growth
Annual load increase from electric vehicle adoption.
Efficiency Reduction
Annual load reduction from energy efficiency programs.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Current Peak Demand = 5000, Base Growth Rate = 1.5, Forecast Period = 10, Reserve Margin = 15 = 6 input(s) provided
  2. Calculate Forecast Peak
    Forecast Peak
    5918 = 5918
  3. Calculate Required Capacity
    Required Capacity
    6806 = 6806
  4. Calculate Peak Growth
    Peak Growth
    918 = 918
  5. Calculate Total Growth
    Total Growth
    18.4 = 18.4

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